package com.zhouidea.www.study5.study3;

public class Demo1 {
    public static void main(String[] args) {
        //int a,b,c;
        //int a =1,b =2,c =3;   //要注意程序可读性
        String name = "haokai";
        char x = 'X';
        double pi = 3.14;
    }
}
